so, i'm thinking my understanding of variables is somehow off. when i pass my ($int1, $int2) to a subroutine like somesub($int1, $int2) and call it inside the sub with ($int1, $int2) = @_ they become are not defined. to more explicit, here's extracts of my code:

my ($ownsel, $sortby, $letter, $ascdesc, $t);
...
if ( $cgi->param ) {
    if ( defined ( $cgi->param( 'sortby' ) ) ) {
     $sortby = $_;
  } else {
     $sortby = "name";
  }
    if (defined ( $cgi->param( 'ascdesc' ) ) ) {
     $ascdesc = $_;
  } else {
     $ascdesc =  "desc";
  }
    if (defined ( $cgi->param( 'letter' ) ) ) {
     $letter = $_;
  } else {
     $letter = " ";
  }
    ownertbl( $sortby, $ascdesc, $letter );
} else {
    homepage();
}
...
sub ownertbl {

    ( $sortby, $ascdesc, $letter ) = @_;
...
    $sort = "ORDER BY " . $sortby . $ascdesc;
...
    print STDERR "base = $base, sort = $sort, sortby = $sortby, ascdes
+c = $ascdesc, letter = $letter\n";

[download]

this is a cgi script, so from apache's error.log, i'm getting this:

Use of uninitialized value $ascdesc in concatenation (.) or string at 
+/var/www/cgi-bin/ownertbl.pl line 71.,
base = http://192.168.15.222/cgi-bin/ownertbl.pl, sort = ORDER BY name
+, sortby = name, ascdesc = , letter =  ,

[download]

line 71 is the  $sort = "ORDER BY......" i've dealt with this before by just doing $_[0], but this is not preferred when dealing with multiple variables. where am i messing up here.

btw, this seemed relevant but didn't really answer my question:

http://perlmonks.org/index.pl?node_id=192506

In reply to passing variables to a sub by ag4ve

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